FILE - This photo made in 1964 and provided by the U.S. Air Force shows a B-52 bomber without a vertical stabilizer in flight during a test. A similar B-52 crashed into Elephant Mountain in Maine on Jan. 24, 1963. That plane's 40-foot-tall vertical stabilizer had snapped off, and was found 1.5 miles from the main crash site. (AP Photo/U.S. Air Force, File)